Lepadatu, S. and Xu, Y.B. (2004) Direct observation of domain wall scattering in patterned Ni80Fe20 and Ni nanowires by current-voltage measurements. Physical Review Letters, 92 (12). pp. 1272011-1272014. ISSN 0031-9007Full text not available from this repository.
We present measurements of domain wall resistivity, pinned by nanoconstrictions in single layer ferromagnetic wires of Ni80Fe20 and Ni. Unpinning domain walls from the constriction by current-induced switching allows for an unambiguous measurement of their resistivity changes, namely, 1.7% in Ni80Fe20 and 1.82% in Ni and both positive, which supports the theory of spin-dependent impurity scattering. By deriving an empirical relation for the various constriction widths, the large percentage changes of resistivity in ballistic nanocontacts are reproduced, showing a correlation between domain wall magnetoresistance and ballistic magnetoresistance.
|Institution:||The University of York|
|Academic Units:||The University of York > Physics (York)|
|Depositing User:||York RAE Import|
|Date Deposited:||25 Feb 2009 15:26|
|Last Modified:||25 Feb 2009 15:26|
|Publisher:||American Physical Society|